Is there a simple way to rescale the y-axis of a TH1 when you plot it from
TTree::Draw()?
For example I want to draw a pt spectrum via tree->Draw("pt"). But as
1/pt * dN/dpt not just as dN/dpt.
Also, I would like to plot histos from a Tree where each entry has a
specific weight w (something like dw/dx). In a loop I would simply say
h1->Fill(x_i, w_i);.
But I cannot figure out how to do this in the nice way of TTree::Draw().
If TTree::Draw() can't do it, what do you think is the best alternative?
Greetings
Christoph
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Christoph Ernst
Institut fuer Theoretische Physik
Johann Wolfgang Goethe-Universitaet
Robert-Mayer-Str. 10
60054 Frankfurt/Main
Germany
e-mail: ernst@th.physik.uni-frankfurt.de
Office: Robert-Mayer-Strasse 10, Room 511
Office Phone: 069 - 798 22844
Priv. Phone: 069 - 47 29 88
http://www.th.physik.uni-frankfurt.de/~ernst